I mentioned this in another thread, but wanted to highly, highly recommend the Postmodern Jukebox show at the Mirage. It's inside 1OAK, which they've finally stopped trying to use as a nightclub and have basically repurposed as a jazz/lounge venue. Incredibly intimate space, great sound quality, and PMJ is insanely talented. Also, the service was shockingly good. The usher upgraded me to a front-row booth; not only did I not even ask for that, but she emphatically rejected the $20 I tried to give her. Cocktail service was great as well, and though I wasn't drinking, the waitress came by really frequently. Overall, it's definitely a venue worth visiting, and a show worth going to.